Camera-shutter.



n. KLEIN T.; BRUEGK.

,manu BHUITTBB. APYLIUATIQI FILED 11111225, 1910. I

1,0923 10. Patented Mar. 31 1914 R. KLEIN d: T. ,BRUECK GAMBA8111111211. APPLIOQTMI'FILED 31111125, 1910.

Patented Mar. 31; 1914` 8 SHEETS-SHEET 2.

-R. KLEIN.. asv T."'BRUHGK. CAMERA SHUTTLE. A APPL1UATIOI FILED JUIB 25,1910. l n 1,092, 1 1 0, Patented #Man/31, 19771-4 Y unimi) sierrasPATENT OFFICE.

nunomn KLEIN AND runonoa Bannon, or noonizs'rnn,v N Ew Yoan, assumons Tonorms aosENnLooM, or nocnnsrnn, NEW Yoan.

CAMERA-smart.

specification: Letters Patent.

i Application .tiled lune 25, 1910. Serial No. 568,926.

Patented Mar. 31', 19'14.

l To all 'whom zt may concern.'

Y shutters and it hasl for an object to provide a simple and durableconstruction Which is automatic in its action, that-pis, the shutterblades are opened and closed merely by one operation of the operatingmechanism.

Another object of the invention is to providean automatic shutter whichpositively actuates thel shutter blades in both directions.

Other objects. are' to improve the shutter mechanism, the operatingdevices for the master member, the detaining means for bulb and timeexposures and the retarding means'for the operating mechanism.

lTo these and vother ends the invention consists in certain parts andcombinations of parts all of which will be hereinafter described, thenovel features. thereof being pointed out inthe appended claims.

VIn the drawings Figure 1 is a front view'of a shutter constructedinaccordance with this invention; Fig. 2 shows the front closureremoved. to illustrate the shutter operating mechanism, the cam whichcontrols the detaining` member being removed and the parts otherwise'occupying their normal 'l positions; Fig. 3 shows the shutter with therear closure removed; Fig. 4 isa similar view showing the shutter bladesremoved;

Fig; 5 is a view similar to Fig. 2 showing the setting cam in positionto give instantaneous exposures, and the parts 'occupying positionswhich they take immediately on the release of the master lever by theoperating-devices; Fig. 6 shows in detail the positions of the detainingmember and proximate parts when' the shutter is adjusted for bulbexposure and while the bulb is held with pressure; Fig. 7 shows theengagement of the bulblever with the detaining member to move the latteron bulb exposure; Fig. 8

shows thev cam adjusted for time exposure l with the shutter ,in openposition; Fig.A 9

shows the position of the parts when the detaining member is 'shiftedfrom stop positien under the action of the do onv the operatmg member;Fig. 10 is a e'tal View of the latch, showing the position ofthe latterduring the closing movement; Fig.f11 is a detail v1e'w showing theretarding means adjusted for greatest retarding action; Fig. 12

shows the 'position of the setting cam for' the adjustment shownl inFig. l11; Fig. 13 is af side view of the shutter; Fig. 14 is a rear viewofthe shutter; Fig. 15 is a detail-view illustratlng lthe latch and themaster member 1n normal positions; Fig. 16 is a'sectional view of thecasing of the shutter; Fig.

1? is a detail view of the setting cam and its dlsk; Fig. 18 is a detailview of the master lever; and Fig. 19 is a sectional view of theretarding means.

vln thepresentvembodiment of the invention there is employed asubstantially rin-g shaped ca smg 1 and an apertured partition 2rigidpwith the ring 1 and so located that .the latter projects fromopposite sides thereof to provide two chambers 3 and 4 whichrespectively 4serve for housing the shutterg-l mechanism and theoperating mechanism for the latter.' Also projecting from one sideoffthe partition 2 about the aperture,

thereof is the lens barrel 2*l providing with ring l anannular'chamber'for the shutter.

operating mechanism. Removable closures 5 and 6 may be providedpreferably separat-e from said mechanisms, so that when 'the closuresare' removed-the operative parts of the shutter may be inspected andoperated independently Aof thev closures, thus facilitating theassemblingand the repair ofparts ofthe shutter.

The shutter mechanism, in this instance,

comprises a' pluralityof blades 7 (preferl ably four) separately pivotedon pins 8 .projecting from partition2 and-cooperating to close'theaperture 90. These blades may be connected for simultaneous operation bytwo levers 9 and 10 pivoted vintermediately of their ends at 11 and 12respectively and each having pin and slot connection 13 at its ends withtwo of the blades 7', thus connecting the blades in pairs, the two pairsbeing connected together by a link-14 pivoted at its ends to the levers9 and 10. The lever 9 may have a laterally extending finger 15projecting -through a curved slot 16 in the partition 2 so that theshutter may be controlled by an operating mechanism in the chamber 4.

The shutter mechanism above described 110 i loo facilitates a quickassembling of the parts 1 with great accuracy, takes up but a very 25connection 22a with, the lever.

small s ace and is mexpensive 'to manufac-- ture. t also has very littlefriction and is therefore very sensitive. Of course, itV may be usedwith any o erating mechanism. A desirable form o operating mechanismwhich may be used .with or without the sa1d shutter mechanism comprisesa master member 17 preferably inthe form of a lever pivotcd at 18 to thepartition 2 and havingone end controlling the shut-ter mechanism and'the other controlled by suitable operating devices. Preferably themaster lever is employed for moving the shutter positively in bothvdirections and, in order that this result may be accomplished with but asmall movement of the master lever, a latch or dog 19 has its pivot. 20mounted independently of the master lever to swing in an arc I greater.t-han the arc in which the master lever swings. Preferably the latch ispivoted to a member or arm 21 mounted to swing about an axis 22, andmoved by the master lever havingV for this 'purpose a `pin and slot Thenach may have a pair of shoulders 23 and 24 -lyling substantiallyparallel and adapted to lcooperate With the finger.v 15 which is refer--ablyvflat-tened, Ia face 25 being rovi ed on the latch to maint-ain theshoul ers andthe project-ion 'in coperative relation. When the mastermember .is swung against they action of its spring 26 and from theposition 'shown in Fig. 15 by means of suitable operating devices, thelatch slips over the' projection 15 without shifting the latter untilthe position shown in F1g.. 5 is reached,

when the shoulder 23 is moved above and in engagement with the linger15l so that upon the release of the master lever, theshutter blades areforced open by`the spring 26 due to such engagement, the parts reachingthe position shown in Fig. 8, after which the projection 15 is engagedby shoulder 24 due to the upward movement of the latch and the bladesare pulled closed by the spring 26.

If desired a small spring 27 may act on the projection 15 to give theshutter blades a normal tendency to remain closed, for, during ,theacta-tion of the master lever, the latch drags over the projection 15and might operate the blades slightly. This spring should not be sostrong that it will interfere With the action of the spring 26 of themaster lever. -A spring 100 (see Fig; 15) may also act on the latch 19to cause the shoulder 23 to ride abovev thejprojection 15 as the masterlever nears the end -of its movement under' the influence of theoperating devices so that it will be in position to open the shutter onthe return movement of the master member under the influence of spring26.

ing member 28, a manualljioperable member 29 for moving the actuatingmember,

,disk rotatable on a stud 31 and having lateral projections 32 adaptedsuccessively to engage the master lever near one end to move the latteragainst `the actionof its spring 26 and then to release said lever dueto the fact that the end of t-he lever and the projections travel inintersecting paths. To hold the disk against rotation in the oppositedirection a pivoted and spring pressed paWl 33 may coperatewith itsnotched periphery. The manually controlled operating member 29 ispreferably in the form of a lever pivoted at 34 .with one end projectingthrough the casing and formed with a. finger piece 35. Pivoted at 36 tothis lever' is a dog or pa-Wl 37 notched at one end to engage theprojections 32 andheld toward said projections by a spring 38. When t-helinger piece 35 is depressed the pavvl 37 ro-. tates the Wheel 28 in-adirection to shiftthe master lever, after which, the spring 38 tends tomove the finger piece to its original position.

In order that the shutter may be operated by a bulb there may beprovided apiston 40 operating in a cylinder 41 to which air is deliveredby a nipple 42. The piston and its cylinder are arranged in the chamber4 100 and the former engages the bulb operated member 30 which ispreferably in the form of a lever pivoted, in this instance, about anaxis coincident With the axis 18 of the master lever, and having a pinand slot connection 43 With the operating member 29. j The parts of theoperating mechanism so far described will only effect what is termed aninstantaneous exposure, and to the end of securing a bulb exposure, adetaining member 44 may be pivoted at 45 and have a single stop orshoulder 46 which moves into the path of a shoulder 47 on the masterlever and prevents the closing of the shutter blades. The detainingdevice mayjiave a y normal tendencyto move to stop position given by aspring 48 acting thereon; and so that it will not move until the masterlever. has reached a. certain position, the master lever exercises acontrolling relation thereover by engagement of shoulder 47 with a face49 on the detaining member. The stop 46 is not engaged by the masterlever immediately upon the release of the latter by the actuating member28, as themaster lever is permitted to move under the action of itsspring 26 until the shutter blades are opened, when engagement with thedetaining member takes place.

As long as the bulb lever is held by pressure vof the bulb lever 30 andengaged by the tion of member 29 the detaining member out of the vpat onjthe bulb, the shutter blades 7 will remain open but Au on the releaseof the pressure, connection is established between the operatmg devicesand 'the detaining member '44 preferably'by means of a projection 50 ofthe detaining member located in the path latter -to shift the stop1 46of the detaining of the master "lever, freeing the latter and permittingit'to close the shut-ter blades. For the purpose Vofobtaining timeexposures, the -stop 46 is also employed for engaging with the masterlever, and the connection at 50 between the .ing the detainin member 44from its stop position. To this end the detaining member 44 is providedon its rear face -with a lateral projection 53 which lies directly inthe 'path of dog 37 so that upon the operamember 44 will` be shiftedfrom stop position.

lje'ction 56 on the detaining member and n Any suitable means may be'employed` for adjusting the operating mechanism to determine bulb ortime exposure.` In this instance a cam 54 is secured to'a setting disk55 both of which turn on the stud or post 31. This cam may coperate witha proshift the latter to any one of three operating positions, viz:instantaneous, as shown in Fig. 5, in which the master lever moves in 45both directions without the shoulder v47 engaging the detaining member;bulb, as shown in Figs. 6 and 7, in which the detaining member ispositioned so that its shoulder 52 is not engaged by projection 51 onthe bulb lever; and time, as shown in Fig. 8, in which the detainingmember is positioned so that the shoulder 52 and projection 51interlock.

With the object in view of retarding the operating mechanism forproducingv exposures oflimited time there may be employed a movable stop,57 to coperate with the master member. This stop may be arranged at oneend Iof a lever 58 that is pivoted at 58 between its ends in the chamber4. The outer end of the vlever 58 has a clutch connection with aretarding means preferably arranged within chamber 4 and comprising arotatable governor 59 and a train of gearing 60, theclutch connection,

in instance, 'being in the form of a notched wheel "61 secured to thegearingv and a member 62 having a tooth 62 to enga e the notched wheelandan end 62b sliding y coperatlng with the lever 58.l A spring 63movies the'member '62 in one direction independently of disk or wheel 61to cause the member 62 to' follow quickly the lever 58 without causi theretarding mechanism .to-move except v1n one direction so -that it is'lmpoible to actuate the shutter so uickl that the retarding means willbe a ecte For .the purpose of adjusting thestop 57 relatlvely to themaster lever and thus varying-the time of the opening of the shutter,

a stop 64 is provided and is preferably arj ranged on one end of a lever65 which is pivoted at 66 and has its other end 67 cooperating with thecam 54. It isy apparent that the stop .64 can render the stop 57inoperative as shown in Fig. 2, give full retarding action as shown inFig. 11 or bepositioned to locate the stop 57 at any point between theselimits.

The operation of the invention will be fully understood from thefdregoing description but `it may be summarized as follows:Instantaneous exposure is effected by adjusting the setting disk 55 so4that the cam 54 lies in the position shownin Fig. 5J, said cam'coperatingwith detaining member 44 to preventstop 46 moving into thepath ofthe master member 17 and also cooperating with vlever 65to holdstop57 in the position shown in this figure. AWhen the iinger'piece 35ispressed or piston 40- moved, the dog 37 shifts the actuating Wheel 28causing master member 17 to bemoved in one direction and then releasedto' travel in the reverse direction under the action of' the shoulder23' engages the projection to 1 open 'the shutter blades, after which,thev shoulder 24 engages the projection 15 and pulls the shutter bladesclosed.

`For bulb action the cam 54 is shifted to the position shown in Fig. 6so that the stop 46 lies in the-path Vof the projection 47 on the masterlever andpholds' the latter against a complete return movement with theshutter open; Upon the release of the pressure the projection 50 on thedetaining member is engaged by the bulb lever 30 and the stop 46 movedout of the path of thevmaster lever so that the latter may move underthe action of its spring and close the shutter. During stop A57 lies sothat the retarding means does not act on the master member. I

For time exposure the cam 54 is adjusted to the position shown in Fig. 8so that when the operating evices are actuated, the

this adjustment of the cam 54, the

i shoulder 52 on the detaining member movesin the path of projection 51on the bulb-lever and prevents the latter engaging the projection 50 toshift said detaimng member. The dog 37- is also positioned so that uponthevnext actuationof the operating de'- vices v'the projection-53 willbe. engaged by the dog and the det-aining member 44 'shifted from stoplosition.

Y Acamera s utter constructed in accord-- ance with this invention hasits blades connected for simultaneous operation by a mechanism which issimple in construction and operation and is adapted to have its partsickly and accurately assembled. The

' detaining member is simple as only one stop is provided for eectingthe time and the bulb exposures, provision being made for utilizing theoperatmg devices of the master lever to lock the detaining member instop position when the shutter is adjusted for time exposure. Theoperating devices are also employe for unlocking the detaining. memberand are of novel construction permitting easew and quickness 1n action'.A novel retarding means is provided which permits a movement of themaster lever inependently. thereof sothat the operating mechanism isrelievedof work in setting the retarding means', while at the sametime-the retardingl means is at .all times ready for action.' f What Weclaim as our invention and desire to secure by Letters Patent, is:

vl. A camera shutter comprising a ring, an apertured partition rigidlysecured within lthe ring so that the latter projects from one sidethereof, a lens barrel -rigid with the apertured partition andprojecting therefrom about the aperture to form with the ring an annularchamber, a shutter operating mechanism arranged within the annular vtochamber on one-side ofthe partition, a removable closure for the annularchamber entirely separate from the shutter operating mechanism, shuttermechanism mounted on the vother side ofv the partition, and a closurefor the shutter mechanism.

2. A camera shutter comprising a ring, an apertured partition rigidly`secured 'within the ring so that the latter'projects beyond both sidesof the partition, a lens barrel rigid with and projecting from one sideof 'the partition about theaperture to provide an annular chamber, ashutter operating l mechanism arranged inthe annular chamber, aremovable closure for the operating mechanism separate'from saidshutteroperating mechanism, shutter mechanism suputter mechanismseparate from the shutter mechanism. 3. In a camera shutter, thecombmatlon of a shutter mechanism comprising a; plurality of yshutterblades, levers pivoted between their ends to a fixed part of the shutterand connected on opposite sides of their pivots to different .-blades,and a'link connecting the levers, with shutter o er'atng mechanismconnected to one of the evers.

4. In a camera shutter, the combination of a shutter mechanismcomprising a plurality of pivoted "blades, `levers pivoted between theirends-to a fixed part/of the shutter, pin and slot connections betweeneach lever and 'a pair of blades on opposite sides of the pivot of thelever, and a link connecting the levers, with a shutter operatingmechanism operatively connected to one o f the levers.

5. In a camera shutter, the combination with a casing having anaperturedpartition,'of shutter blades pivoted on one side of the partition, anoperating lever for said blades through the casing partition, a latch'.arranged on the opposite side of the partition and` coperating with therojection onthe lever, and a master lever ior actuating the latch.

6. In a camera shutter, the combination with a shutter mechanism, ofcontrolling mechanism comprising a master lever, and a latch foractuating the shutter mechanism pivoted independently of the masterlever and having a movable pivot shiftable by said lever in a greaterarc of a circle than is made by any portion of the master lever in itsmovement, and means for supporting the pivot of the latch in order thatthe pivot may partake of the before mentioned movement.

7 In 'a camera shutter, the combination with a shutter mechanism, ofcontrolling .mechanism therefor comprising a master lever, a swingingmember moved by the master lever and a latch pivoted to the swingingmember. and engaging the shutter mechanism to actuate the same.

8. In a camera shutter, the combination with the shutter mechanism,-ofoperating mechanism for the shutter mechanism embodying a master member,and a latch interposed between the master member and the shuttermechanism, said latch having a connection with the shutter mechanismwhich permits the latch to slip past. the shutter mechanism whenthemaster member is moved in one direction and to engage and ositivelyopenand then positively close the s utter mechanism on the movement ofthe master member in the other direction.

having a projection extending 9. In a camera shutter, the combination Awith a shutter mechanism, of a controlling mechanism therefor com risinga master member, la swinging mem er moved by the master member, and alatch pivoted on the swinging member and eccentrically to the axis ofthe'latter and having a portion cooperating wth the shutter mechanism toopen the latter and a portion coperating with the said shutter mechanismto close the same.

- 10. In a camerashutter, the combination with a Shutter mechanism, ofcontrolling ver,' a spring moving the same in'one direction, anactuating member coperating with the. master lever to move it againstthe action of the springv and then automatically release said lever, aswinging member moved by the master lever in both directions, and .alatch pivoted on the swinging member lecoentrically to the axis of thelatter and having a portion coperating with the shutter mechanism toopen the shutter and a portion coperating with the shutter mechanism toclose the shutter. Y v 11. In a camera shutter, the combination with ashutter` mechanism, of controlling A means therefor comprising a mastermem-l ber, a spring'for moving said member in one direct-lon, anactuatmg member for the master member moving: the latter against'the.

action of the spring, and a latch'pivotally i mounted independently of.the master lever and controlled by the latter, said latch having ashoulder to coperate with the shutter mechanism to open the same and ashoulder to coperate with the shutter mechanism to l close the same. l l

f 12.`In a camera shutter, the combination with a shut-ter mechanism, ofcontrolling mechanism therefor comprisinga pivoted master lever, aswmgmg member, a p1n and t slot connection between' the-,swinging memberand the master leverl and va latch coperating with the shutter mechanismand pivoted on the Swingin member and eccentrically to the axis of t elatter.

13. In acamera shutter, the combination with a shutter mechanism' havinga light spring to maintain it normally closed, of 'a master lever, astronger spring for moving the latt in one direction, operating Idevices for the master lever moving the latter-in the other directionagainst the action of .the second named spring and automaticallyreleasing said lever at the end of such movement, and a latch operatedby the master lever and cooperating with the shutter mechanism, saidlatch having a lost motion connection with the shutter mechanismpermittingits movement relatively to the shutter Amechanism when themaster lever is moved by the operating devices and engaging -With andpositively actuating the shutter mechanism during the opening and theclosing movement of the latter.

14. In a camera shutter, the combination '65 with a shutter mechanism,of an operating mechanism for the same, embodying amaster member foractuating the shutter mech- `anism having a lost-motion connection withthe shutter mechanism permitting the master member to move invonedirection without actuating the shutter mechanism, and

with a shutter mechanism, of `a master member for controlling the same,and a rotary actuating member having. a plurality of laterally extendingoperating projections to successively engage the master member.

soV

16. In a camera shutter, the combinationwith a shutter mechanism, of apivoted mas,- ter member and a rotary actuating member having aplurality' of laterally'extending operating projections successivelycoperating with the pivoted master member and then movable to free thelatter.

17. In a camera shutter, the combination with a shutter mechanism, ofanfoperating mechanism therefor comprising a. masterY lever, a rotaryactuating` member Vprovided withl projections coperating with the mastermember, a device for preventing the rotation of the actuating device inone direction, and apivoted operating member for the actuating devicehavingv a dog pivoted thereon and adaptedto engage-the projections ofthe actuating device. v

."18. In a camera shutter, -the combination with a shutter mechanism, ofan operating mechanism therefor comprising a master member, a detainingmember having a stop thereon movable into the path of the master member,s aid detaining member also having a portion engaging the masterjmemberto prevent the movement of the stop into the lpath of the saidmastermember until the latter reaches a certain position, and meanstendingl to move said detaining member so los thatthe stop thereof liesinthe path of the master member.

- 19. In a camera shutter, the combination.

with a shutter mechanism, of' an operating mechanism therefor comprisinga master member, a detaining member for the master member having'asingle stop for bulb and for time. exposures, means for determining theposition of the detaining member for bulb or time exposure,"` operatingdevices for the master member having connection with the detainingmember for moving the latter from stop position when said operatingdevices are released, and means for rendering such connectioninoperative when the shutter is adjusted for time exposure.

20. In a camera shutter, thev combinationwith a shutter mechanism,of anoperating mechanism for the shutter mechanism com- A'prising a mastermember, operating devices for the master member, a detaining memberhaving a stop movable into the path of the master-member, means tendingto move the detaining member to stop position, means connecting' themaster member and the detaining member and preventing such movementuntil the master memberv reaches a certain position, and connectionbetween the operating devices and the detaining member for moving thedetaining member from stop position. v

, 21. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanisml therefor comprising a master member, a detainingmember for the master member having a tendency to move to stop positionand provided with a single stop for bulb and time exposures, means fordetermining bulb or time exposures, operat-ing'devices for the mastermember having connection with the detaining member to move the latterfrom stop position when the operating devices are released, and meansrendering such connection inoperative when the shutter is adjusted fortime exposures.

22. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanism thereforcomprising a master member, adetaining'member for the master member having a single stop for bulb andfor time exposures, means tending to move said stop to stopv position,means coperating with the detaining member to determine the time orthebulb exposure, operating devices for the master member havingconnection with the detaining vmember to move the latter from stopposition when the operating devices are released, and means renderingsuch connection inoperative When the shutter is adjusted fortime/exposure.

23. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanism therefor comprising a master member, a detainingmember for the master memberhaving a single stop for time and bulbexposures means giving the detaining member a tendency to move to stopposition, a device coperatingvvith the detaining member for determiningthe time or the bulb exposure, operating devices for the master memberhaving connection with/,the detaining member to move the latter fromstop positionv upon the release of the operating devices, meansrendering such connection in operative when the shutter is adjusted fortime exposure, and means causing said operating devices tol move thedetaining member from stopping posit-ion on their next operation. f

24. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanism therefor comprising a master member, a detainingmember having a single stop for bulb and time exposures, means fordetermining the position of the detaining member for time or bulbexposures, a member engaging said detaining member to move it from stopposition, and cooperating portions on said member and .the detainingmember interlocking. when the detaining member is adjusted for timeexposure.

25. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanism therefor comprising a master member, a detainingmember coperating with the master member for time and bulb exposures,'a' bulb lever engaging said detaining member to move the latter fromstop position, means for determining the position of the detainingmember for bulb or time exposure, and coperating portions on the bulblever and the detaining member interlocking when the detaining member isadjusted for time exposure.

26. Ina camera shutter, the combination With a shutter mechanism, of anoperating mechanism therefor, comprisinga master member, a pivoteddetaining member movable into the path of the master member for bulb andtime exposures, a pivoted lever engaging said detaining member on oneside of its pivot to move it from stop position, and cooperatingportions on the said lever and the detaining member on the other-side`of the pivot of the latter interlocking when the detaining member isadjusted for time exposure. I

27. In a camera shutter, the combination With a shutter mechanism, ofoperating mechanism therefor comprising a master member, a pivoteddetaining member for the master member, means determining the positionof the latter for bulb or time exposures, operating Vdevices for themaster member embodying a pivoted, lever engaging the detaining memberonone side of its pivot to move it from stop position, and cooperatingportions on the lever and the detaining member interlocking when thelat-V ter is adjusted for time exposure, the operating devices havingprovision separate from the lever for disengaging said interlockingportions. y

28. Ina camera shutter, the combination with -a shutter mechanism, of adetaining member for holding the shutter mechanism open having a singlestop for time and bulb ,l

exposure, means controlling -the detainingl member forobtaining time orvbulb exposure,

exposures, means normally tending to move the detaining member todetaining position, operating devices for eifecting the opening oftheshutter when moved in one direction andA connected to the detainingmember to.

shift it from detainingposition when moved in the other direction, alocking device for preventing the return'of said operating ldevices toinitial position, means for estabv lishingconnection between theoperating'de vices and the detaining member to shift the latterfromdetaining pos'itionlwhen the operating devices are so locked, and means,vfor controlling the locking device for time or bulb exposure. l

3Q. In a camera shutter, the combination with -a' shutter mechanism, ofa master member having a Qconnection with the'shutter mechanism whichpermits themaster mein'- ber to move in one direction withoutactuatingthe shutter mechanism and to move in the other direction to effect theopening Vand .for vcoperatin with the detaining memberA tainin memben sv the closing of the shutter mechanism, operating devices for effectingthe movement of the master member in the first mentioned direction, asingle detaining'membel" forv bulb and time exposures, holding theshutter mechanism open after the-mastermem-V -ber has moved to oplen'thesaid mechanism,

means preventing t e operating devices returning to their initialpositions when the detaimng melmber is holding theV shutter mechanismopen, and means connecting the operating devices and the detaini'ngmember upon the' operation of the operatingfdevices from the secondposition to shift the de- 31.` n a camera shutteigthe combination with a,shutter mechanism, of' a master member, for operating 4the shuttermechanism, aldetainmg member for holding the shutter mechanism open,means normally tending to move the detaining member todetaining'position, an operating member for the master member, and abulb lever connected to the operating member and'to the detaining memberto shift the latter from detaining position.

32? In a camera shutter, the combination with a shutter mechanism` andVa master member for controlling taining -member for olding the shuttermechanismopen for bulb and ytime exposure, and'a lever having a portionto coperate with the detaining'member for shifting the latter from.detaining positionv and a portion to prevent suc shifting.

33. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanism therefor, a detaining member for holding the shuttermechanism open havin a single sto for bulb and timeI exposures, an

lmeans for ocking said stop in'stop position when the shutteris adjustedfor time exposure.

' 34. In a camera shutter, the combination with a shutter mechanism, `ofoperating mechanism therefor, a detaining member for the same, of adeholding. the shutter open havingva single i Y .stop for bulb and timeexposures, and means controlling said detaining member to determine bulbor time exposure.

35. In a camera shutter, the combination g with a' shutter mechanism, ofoperating mechanism `therefor embodying a master member, a detainingmember for the master member having asingle sto for bulb and I timeexposures, land means or locking Isaid stop in stopv position when theshutter 1s adjusted for time exposure.

36. AIn a camera shutter, the combination with a shutter mechanism, 'ofvoperating mechanism therefor, a detaining member for holding theshutter mechanism open having a single stop for bulb and time exposures,means for determiningthe position of the detaining member for bulb ortime exposure,

and means for locking said stop in sto poSition when said detaimngmember is adriusted' for time exposure.

' 7. In a camera shutter,.the combination with a shutter mechanism, of adetaining member for holding the shutter-open having a single stop forbulb and time exposures, l means for determining the position of the,detaining member for bulb or time exposure, locking means controlled bysaid determining means for holding the detaining member in stop.position when the detaining means is adjusted for time exposure, andloperatin devices for the shutter mechanism adapte to unlockthe detainingmember.

. 38. -In a camera shutter, the combination v100 other, a detainingmember movable to stop I the master member after its release by theactuating member, and means controlled byV the detaining member to causethe operatp ing member' to befpositioned to actuate the detaining memberon its next operation.

40. In a camera shutter', the combination with a shutterl mechanism, ofoperating mechanism therefor embodying a masterv member, an actuatingmember therefor, an operating member having a movable dog 125 to operatethe actuating member, a detaining member arranged to stop the mastermember after its release by the actuating member, and means controlledby said detaining member for causing the dog of the 13o operating memberto be positioned to operate the kdetaining member'on its next opera-ytion. y

41. In a camera shutter,the combination with a, shutter mechanism, ofoperating mechanism therefor embodyingv a master lever,a'n actuatingmember rotatable in aA complete circle to operate the, master lever, anoperating member having a pivoted dog to coperate with the actuatingmember, a detaining member movable to stop the master lever after itsrelease by the actuating member,'and means controlled by the detainingmember forcausing the dogof thev operating member to be :positioned toloperate the-detaining member after it has operated the actuatingmember. A

42. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanism therefor embodying a master lever, `a rotaryactuating member having a1 plurality of lateral projections thereonarranged successively to coperate With the master lever, a device forpreventing the rotation of the actuating device in one direction, apivoted operating member having a dog pivoted thereon to Vengage thelateral projections of the actuating member, a de-l member adapted tostop the master member after its release by the actuating member andvprovided with a shoulder, and means l ccperating with the operatingmember and with the shoulder, when the detaining member stops the mastermember,- in order to position the dog so that the latter may shift thedetaining member out of the path of the master member. a

44. In a camera shutter, the combination with a shutter mechanism, ofoperating mechanism therefor comprising a master member, an actuatingmember therefor, an operating member for the latter having a dog thereonadapted to operate the actuating member, a detaining member adapted tostop the master member after. its release by the actuating member andprovided with a shoulder, and a lever having pin and slot connectionwith the operating member and a shoulder to engage the shoulder on thedetaining member when the latter is shifted to stop the master member.

45. In a camera shutter, the combination with a lshutter mechanism, ofoperating mechanism therefor, embodying a master member, a pivoteddetaining member movable into the path of the master member for time andbulb exposures, a bulb lever cooperating With the detaining member onone side of the pivot of the latter, means for determining the position.of the detaining member for bulb or time exposure, coperat-in portionson the bulb lever and the detaining member interlocking when the latteris adjusted for time exposure, and an operating member for the mastermember connected to the bulb lever and set bythe latter to shift thedetaining member when the said detaining member is interlocked With thebulb lever. y

46. Ina camera shutter the combination with a shutter mechanism, ofoperating 'mechanism therefor comprisin a master lever, a rotaryactuating mem r'having a plurality of laterally extending projections orengaging the master lever, a pivoted operating lever having a dogpivoted'thereon and engaging the projections on the actuating member, apivoted detaining member having a single stop thereon for bulb and timeexposures, means tending to move the stop into the path ofthe masterlever, means on the 'detaining member preventing such movement until themaster lever reachesla certain position under the action 0f theactuating member,-a pivoted-bulb lever counected to the operatinglever,/ means connecting the Lbulb lever and the detaining member andcausing the latter to be moved from stop position on thelrelease of thebulb lever, ya cam coperating with the detaining member to determinebulb or time exposure,

a shoulder on the detaining member cooperating with the bulb lever tomaintain the stop of the detainin member in engagement-With the masterever, and means on the detaining member adapted to be engaged by thepivoted dog of the 4operating' member so that the latter may shift thedetaining member from stop position.

47. -In a camera shutter, the combination 'with a. shutter mechanism,and operating mechanism therefor, of a retarding mechalnism and a clutchinterposed between the retarding Imechanism and the -operatingmechanism.

48. In a camera shutter, the combination with a shuttermechanism and anoperating mechanism therefor of a retarding mechanism for the shuttermovable in one direction only, and a clutch interposed between theretarding mechanism and the operating mechanism.

49. In a camera shutter, thecombination with a shutter mechanism and anoperating mechanism therefor -embodying a master member, operatingdevices for moving the master member in one direction, and a spring formoving the master member in the other direction, of retarding means' forsaid mas- 1 spring.

ter member movable onl in-one direction, and a clutch between tiemasterv member 'and the `retarding means permitting Vthe master memberto move under the action of its operating devices without moving theretarding means. y y

50. In a camera shutter, the combination. with a shutter mechanism andoperating mechanism therefor, of a controllable stop for the operatingmechanism, retarding means, anda clutch between said stop and theretarding means.

51.l In a cameral shutter, the combination withy a shutter mechanism andoperating mechanism therefor, of a. controllable stop for the operatingmechanism, retarding means a clutch between the stop and the ,retardingmeans, and a sprin for moving the stop independently of t e retardingmeans in a direction opposite to Vthat in which it is .moved by theoperating mechanism.

52. In a camera shutter, the combination with a shutter mechanism, andoperating mechanism therefor, of a stop for theopererating means, clutchbetween the stop and the retarding means, a. spring for moving said stopindependently of the retarding means in a direction opposed to that inwhich it is moved by the operating mechanism, and means for determiningthe distance the stop will move under the action of the spring to varythe retarding action;

. 53. In a camera shutter, the combination with a 'shutter mechanism andoperating mechanism therefor, of a stop for the operating mechanism, aseries of retarding wheels, a clutch connection between the wheels andthe stop, aE spring moving said stop independently of the retardingWheels, vand means for determining the position the stopy shall lmoveunder the action of the 54. In a camera shutter, the combination with ashutter mechanism and operating mechanism there-for comprising a mastermember, a spring for moving the latter in one direction and operatingdevices for moving it in the other direction, of a stop for the mastermember, a lever by which the stop is carried, a swinging member, aspring pressed pawl pivoted to the swinging member and engaging the stopcarrying lever, a ratchet wheel engaged by the pawl, and retarding meansconnected to said ratchet wheel.

55. In a -camera shutter, the combination with a shutter mechanism, of aretarding mechanism, a stop having connection with the retardingmechanism and moving with the latter in one direction, a spring formovin the stop in the other direction, said stop being adapted tocoperate with the shutter a retarding mechanism a mechanism 4to retardthe action of the lat-Y ter, and means to cooperate with the stop tovary the ac tion` of the shutter mechanism on the retarding mechanism.

y56. In a camera shutter, theA combination with a shutter mechanism, ofa master lever having connection with the shutter i mechanism to move inone direction without operating tion to open and to close shuttermechanism, a retarding mechanism, a stop having connection with theretarding mechanism to move in one direction therewith and during suchmovementbeing arranged to control the movement of the'master member asthe latter moves to close the shutter mechanism,

vmeans causing the stop to move in the other direction, and means rcontrolling the return movement of thestop under such means to vary theretardin action.

57. In a'camera s utter, the combination with a shutter mechanism, of amaster member having connection with the shutter mechanism to movein onedirection Without operating the latter and t'o move in the otherdirection to open and close the said shutter mechthe latterjand in theother direc- 4 anism, a retarding mechanism, a stop independent of themaster lever having connection with the retarding mechanism to move inone direction therewith and arranged to retard the action of the masterlever on the movement of the latter to close the shutter, a

spring actingI to cause the stop to follow the master lever in the otherdirection,and means for controlling the return position ofthe stop underthe action of the spring to vary the retarding action.

58. In a camera shutter, the combination -with a shutter mechanism and amaster member for controlling the same, of a de-v taining member forholding the shutter mechanism open, an actuating member for the mastermember adapted to shift the detaining -member from detaining position,and a bulb 'lever for moving the actuating member having a portioncooperating. with the detaining member for holding the latter indetaining position.

59. In a camera shutter, the combination with a. shutter mechanism, anda master member connected thereto to open and close the shutter by amovement in one direction, of a detaining member for holding the shutteropen, and operating devices having one movement to eiiect the vmovementof the master member for engagement. by the detaining member, andanother movement for shifting the detaining member, said operatingdevices having a pivoted latch for en- -gaging the detaining member onthe second movement. f

60. In a photographic shutter, the combination with shutter blades and amaster member having a lost motion connection with the shutter bladespermitting said masmechanism embodying a trein of Wheels end anoscillatory member having e portion thereon adapted to be engaged by themester' member to be moved by the latter in moving to efe'ct the openingand the closing of the shutter, said oscillatory member havingconnection with the train of Wheels causing the latter to move with theoscillatory member when the said member is moved by the master member, aspring or causing i-,oom io the oscillatory member to move in the other15 direction as the master member is moved Without actuating the shutterblades, and

means for 'varying the amount of movement of said oscillatory memberunder the action of the spring to Very the reterding action. 20

ln Witness whereof, we have hereunto set our hands this 22nd day o June,1910, in

the presence of two subscribing witnesses.

. RUDLPH KLEN.

THEDOR BRUECK,

Witnesses:

Slim/is,` A.I M. Wurm/ione.'

